SOLUTION: determine the value of r so that the line (5,r) and (2,3) has a slope 2. (-3,-1),m=-1/5

SOLUTION: determine the value of r so that the line (5,r) and (2,3) has a slope 2. (-3,-1),m=-1/5

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Question 55119: determine the value of r so that the line (5,r) and (2,3) has a slope 2.
(-3,-1),m=-1/5
Answer by rchill(405) (Show Source): You can put this solution on YOUR website!
The slope, m, is defined as . It doesn't matter which ordered pair is , and , because you'll get the same answer. Using substitution we get , which simplifies to . Multiplying both sides by 3 gives us and adding 3 to both sides gives us .
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